Large backside, pennies and train among Turner Prize contenders

A large sculpture of a bare backside and a model train were among the artworks unveiled at the Turner Prize exhibition in London on Monday in the run-up to Britain's annual contemporary art award. The Tate Britain museum presented works by the four contenders for this year's award, which will be announced on Dec. 5. Among this year's nominees are Andrea Hamilton whose "Lichen! Libido! (London!) Chastity!" is a re-staging of an exhibition in New York.